Norway basically removed all covid restrictions when infection rated peaked (and they did not know it was the peak), in other words during a massive wave of omicron. Bars have for weeks been packed with people, culture events sold out, people hugging each other, movies theatres packed. What happened is that quickly more got infected and then infection rates drop like crazy. Number of covid death slightly up, but according to the director of FHI (CDC of Norway, there is no increased death over all from normal years after opening)
loads of people I know had Omicron last few weeks, some even did not bother stay home (as no requirement for it). Health authorities assume risk for severe disease from omicron to be considerably smaller than for example Delta (personally I had confirmed delta months ago, and likely also omicron later)
So omicron should likely be classified more like as similar to a cold or flue? this is how several health tops in Norway have talked about it recently. People start to be more out, get more D vitamins (if not been thought full about it).
Sure new aggressive variants of this virus could always emerge where previous infection not have much benefit (unlikely but possible). Until then it looks like Norway and also Finland will come out of this with very low death numbers even compared to countries with much higher vaccination rates, and much much stricter rules.
Death rate per million, worldometer
Canada 964
Norway 319
Finland 489
Sweden 1748
Italy 2603
USA 2965
UK 2378
What are the reasons for so big differences in numbers, how to count could play a role, D vitamin culture, general fitness of population, vaccination rates also, but this alone clearly not good indicator.
Some countries that had extremely strict restrictions now started to get big waves of covid, but yes better to get it when omicron, and also when hospitals and everyone know more than a year or 2 ago.